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| Mirrors > Home > ILE Home > Th. List > eqtr2d | Unicode version | ||
| Description: An equality transitivity deduction. (Contributed by NM, 18-Oct-1999.) |
| Ref | Expression |
|---|---|
| eqtr2d.1 |
|
| eqtr2d.2 |
|
| Ref | Expression |
|---|---|
| eqtr2d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqtr2d.1 |
. . 3
| |
| 2 | eqtr2d.2 |
. . 3
| |
| 3 | 1, 2 | eqtrd 2229 |
. 2
|
| 4 | 3 | eqcomd 2202 |
1
|
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